Manual for SynactiX 1
If CPU FSB is set as default setting Auto, the system detects the CPU front side bus
automatically. If CPU FSB is set as 100MHz, the system will run at 100MHz even if a
processor with 66MHz or 133MHz FSB is installed. Setting up to 133MHz using proces-
sors with 100MHz bus speed is also supported. However, whether or not the system can
be overclocked depends on your processor’s capability. Whether the processor is bus
ratio locked or unlocked should also be taken into account. For bus ratio unlocked proces-
sor, this overclocking feature can be implemented by setting CPU FSB as 100/133MHz,
meanwhile adjusting the bus ratio(multiplier) lower in “CPU SpeedEasy Setup” in AWARD
BIOS CMOS Setup. We do not guarantee the overclocking system to be stable.
BIOS Protection Jumper (JAV)
The BIOS of the mainboard is inside the FWH. If the jumper JAV is set as closed, you will
be unable to flash the BIOS to the mainboard. However in this status, the system BIOS is
protected from being attacked by serious virus such as CIH virus.
Setting the jumper JAV as open (default), meanwhile disabling the “Flash Write Protect” item
in AWARD BIOS CMOS Setup, allows you to flash the BIOS to the flash ROM in FWH.
The DMI (Desktop Management Interface) system information such as the CPU type/speed,
memory size, and expansion cards will be detected by the onboard BIOS and stored in the
flash ROM in FWH. Whenever the system hardware configuration is changed, DMI informa-
tion will be updated automatically. However, setting jumper JAV as closed makes flashing
BIOS and updating DMI information impossible.
Refer to page 4 for the two choices to implement BIOS-ProtectEasy.
Installation Instructions
Flash Write Disabled
Flash Write Enabled
JAV
JAV
CPU FSB 66MHz 100MHz 133MHz AUTO
JFS1 2-3 2-3 OPEN 1-2
JFS0 2-3 OPEN OPEN 1-2
‘1-2’ represents pin1 & pin2 closed.
‘2-3’ represents pin2 & pin3 closed.
JFS0
JFS1
